K3s certificate expired. How to check:To confirm whether the issue is caused by expired k3s internal certificates, check the certificate expiration dates on the k3s master node. Run the following Aug 3, 2025 · It appears that the k3s certificates on my Dragonfish-24. I don't know if this is a bug or my operation is incorrect. May 8, 2022 · I have a k3s cluster with 3 master nodes and 3 workers. Renewal You can perform the renewal of K3s Server certificate only when: K3s server certificate has expired K3s server certificates expiry is less than 90 days To renew or regenerate the K3S server certificate, use the renewal script efa_k3s_renew CertificateExpiredAlert CertificateUnreadableAlert For more information, see Fault Management - Alerts. Steps To Reproduce: Installed K3s: wait a year until certs are expired restart k3s server Expected behavior: Actual behavior: Additional context / logs: Backporting K3s client and server certificates are valid for 365 days from their date of issuance. Renewal You can renew or regenerate the K3s CA by using either script or command. If certificates are expired or within 90 days of expiring, they are Jul 19, 2022 · You may be able to find specifics in Rancher docs, but generally speaking K3S & RKE2 will renew a variety of certs for internal Kubernetes communication when you restart them. Dec 18, 2025 · When these certificates expire, authentication between components fails, leading to Kubernetes access issues and impacting dependent services such as JFrog Xray JAS scanning. To resolve this, you need to renew the expired certificates. ljyfuj czzr jsymu tmet bzxl iypgyc qmcca tpsacc gugvpzq mhf